Automatically-acting spring flap-valve.



Patented Dec. 13,1910.

M. I. GUTBRMUTHi AUTOMATICALLY ACTING SPRING FLAP VALVE APPLICATIONFILED Jun: a0 1905 M. F. GUTEBMUTH.

AUTOMATICALLY ACTING SPRING FLAP VALVE.

APYLIGATION FILED JUNE 30, 190B.

Patented Dec. 1 3, 1910.

3 sHEETs sEEET 2.

N itm'ises: I .[nvenir F MJ Jiffy M. F. GUTERMUTH.

AUTOMATICALLY ACTING SPRING FLAP VALVE.

APPLIGATION FILED JUNE 30, 1908.

Patented Dec. 13,1910.

3 SHEETS-SHEET 3.

Witnesses! shows a valve shown in Figs. 14 and 15 bein made of onepiece.

iig. 3 shows first that the improved valve, in contrast to the olderones, has not a flat but a curved seat surface a, which when the valvecloses fits tangentially to one wall e of the aperture of passage f.surface 9 is itself also made curved parta of the valve plate a bent uppart b is connected, which absorbs in one or more coils (Figs.,4l11) or,as shown in Fig. 3, inafraction of a coil, the bending strains of thevalve, the end 0 of which is attached to the valve casing.

In the form of construction shown in Figs. 4 and 5, several coils b areprovided, the inner end of which is placed on a spindle 0 or attached inother manner to the latter. According to Fl s. 6-11 a separate spindlemay be dispensed with and'the securin of the valve on the seatpperatedin the fol owing manner. The innermost coil is prolonged at both endsover the sideedges m n oft-he flap valve and to these prolongationscoils is directed in the same or an opposite way to the actual seat Bmeans of these coils-la, the attachment of the valveto the seat or to apart firmly connected with the seat, or to the casing wall may takeplace. The attachment is effected most simply to the curved seatsurfaceatthe side 0 the valve (Figs; 8-11) or prolongation Z of the ac 9 (Figs,6 and 7).. By

on the rearward tual seatsurface suitable attachment screws 39 this lastcoil and therewith the' flap may be connected .be connected with .m ostcoil c' and project through a suitable erforation of the spring part b(Fig. 7

l n the forms of construction shown in Figs.

with the seat body. If desired the continuation is, serving'for theattachment, may also the middle of the 1nner- 8-11,jthe' side coils k;which project beyond the side edges of the valve body by screws orinother suitable manner. The superiorit of this construction of valve ascompare withthe older Gutermuth valve with a flat. seat and annel wallsin clined obliquely to it (Figs. 2" and 2*) or standing at right anglestot (Fig. 1), consists in the following pro ,rt1es: The seat surface tobe tightly close passage; the valve rests actually on the 'et orstreainf-of fluid withlift-is not greater than the thickness of the jet,the fluidthusfundergoes no diversion during its'passa e to the seat andvalve in.

contrast to the at se'at surface, in which a more or less greatdiversion of when it is being closed, takesp i tQ liih e The seat"curved. To the plate a are connected.

the coil to be conveniently the valve, extend to the front and areattached to the sides of the actual seat g of hoincides at the frontpart of the valve with the guide face of the Wall of the mounting 1t.

and 11 is shown,

' attachme the jet of fluid, when the valve is openand especially.frpnr'a sin "1e piece of entire length of construction of the valveconsiderably shorter than ment; the small length of construction allowsa larger number of valves to be introduced and thereby a suitablediminution of the valve lift for-the requirements of rapid running andhigh speed. Ifdesired the curved seat plate, the spring coils and thecoils servin for the attachment ofthe valve may e made of se aratepieces of similar or diiferent materia s and connected with one anotherby riveting, screwing, soldering or in other manner.

Instead of, as in the form of construction shown in Figs. 4: and 5 forattaching the flat valve, employing a spindle 0 passed through thevalve, the following arrangevment shown in Figs. 12 and 13 may also beemployed. The-spring coiled part b is con-' -nected with the curved seata of the flap valve. Into the innermost part of the coil 3. bearin body0 g r is passed from each side, whichbody consists of a socket 0,-,-afiat wall g connected therewith and a curved or. fiat edge 1' flanged onthis wall. The-edge is attached to the valve seat by screws p or byriveting or in an '1 other suitable manner. The sockets 0 of t are eachprovided with a slot 6, in order to allow the-bent up end of the innerpart-of ushed therein. The bearing bodies described may, as men tioned,preferably be made, of a piece of sheetmetal, so that a particularlyeasy and cheap construction results. By connecting .the valve with itsside attachment parts, the

mounting and adjusting are cilitated. The combination the attachmentparts into signed in such a way that ished valve may be fixed on theseat without further treatment,'by being simply screwed thereon, so thatspecial mounting and adjusting operations are considerably fa- Finallyin Figs.- 141 6 a modification of the formof construction shown in Figs.10

coils b, connected withone another and directed in opposite directions,nm

with the seat plate axconnected with the outer end of :one spring i1,and with the nt plate connec the other spring coil.

v 5a sat n-c.111

be made,

ese two bearing bodies I of the flap. and a whole is, dethe entirelyfinno longer requisite in in whichthe two spring I with v the end of InFig. 16, the fiat U'shaped sheet of metal is shown from which the flapvalve is made. This sheet of metal is perforated by a slot '2 which isalso U-shaped, in such a way that the middle or connecting bar of theU-shaped metal plate is divided. into two parts a and c, and each arm ofthe plate into two parts Z) and k, which latter are connected at theends i of the arms with one another. T he parts a and c of the middlebar, as shown in Fig. 14?, are suitably curved to the cylindrical seatsurface g, while the connecting parts 5 and is of the arms of the plateare rolled up into similar coils. The front part a which is connected atthe outer end of the first part of the coil 5, forms the anovable seatplate of the valve flap, and

the part a lying behind it, which forms the end of the second part It)of the coil, serves as the attachment endwhich is fixed on. the valvebody by means of the .Washer plates 3' and screws 21. The spring of theflaps and their resistance to movement is'now dependent on the two coilsb and 71:. According to the proportion of the length L of the flaps tothe widths t and u of the coils and according to the selection of thethickness of the metal plate, the spring resistance may becorrespondingly selected or chosen, while further the thickness of thepart forming; the seat and also the attachment end 0 may if desired bemade greater than that of the coils I) and h". This peculiar Gutern'iuthvalve is also applicable Without further diiiiculty in case the seatplate a, as shown in Fig. 1:3, is not curved but perfectly flat and fitstightly on the fiat scat. face 9' of the valve body. The attachmeat partc lying behind the seat plate a in this case can either be made curvedas shown in Fig. 15, or it can, like the plate a, be perfectly flat.

The great advantageof these improved. flap valves consists in that theymay be made in av very simple Way from a piece of sheet metal cut out ina U form, that they have a small constructional length and that themounting and adjusting of the valve plates extremely simple. Thecontinuous metal plate ofthe valve plate might if desired be made invarious thicknesses at se arate parts of the closing member, such as atthe seat, at the attachment end or at either by suitably ing orsoldering like thereon.

the coils, rolling ll; out or by r1vetthickening pieces and the i l l Il l l i l l 1 l l.

seat

I declare that what I claim is l. A flap valve comprising a spring flap,means for fixing the position of one end of said flap, a curved seatplate the other end of said flap, a correspondingly curved seatsurrounding a port normally closed by said valve and means forconducting the fluid to said port in a direction approximatelytangential to said curved seat.

A fiap valve, comprising a spring flap, means for fixing the position ofone end 0' said flap, a curved seat plate at the other end of said flap,a seat member-having a surface curved to correspond With saidplate and apassage normally covered by said plate, one wall. of said passage beingdirected approximately tangentially to the curve of said surface.

In a flap valve, a spring flap comprising a part at one end adapted tobe fixed in position, a curved plate at the other end of said flap, andan intermediate coiled. portion; means for fixing the position of thefirst-mentioned end of said flap, a seat curved to correspond tosaidseat plate and surrounding a port normally closed by said seatplate, and means for conducting fluid to said port in a directionapproximately tangential to the curve of said seat.

-t. In a flap valve, a spring flap compris ing a curved seat plate and acoiled portion, slotted means for securing one end of said coiledportion, a. seat curved to correspond with said seat plate andsurrounding a port normally closed by said plate, and means forconducting fluid to said port in a direction approximately tangential tothe curve of said seat.

5. In a tlap 'alve, a. spring flap comprising a curved scat plate and acoiled. portion, two slotted members engaging opposite sides of one endof said coiled portion, means for securing said slotted members inposition, a seat curved to correspond with said seat plate andsurrounding a port normally closed-b said plate, and means forconducting fluid to said port in a direction approximately tangential tothe curve of said seat,

"In testimony whereof I have signed my name to this specification in thepresence oi"

